Track-bolt lock



(No Model.)

D. F. BLIGHTON.

TRACK BOLT LOCK.

No. 278,678. Patented June 5,1883.

UNITED STATES PATENT OFFICE.

D. FRANKLIN BLIGHTON, OF BUFFALO, NElV YORK.

TRACK-BOLT LOCK.

SPECIFICATION forming part of Letters Patent No. 278,678, dated June 5, 1883.

Application filed April 20, 1863. (No model.)

To aZZ whom it may concern:

Be it known that I, D. FRANKLIN BLIGHTON,

4 a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Track-Bolt Locks, of which the following is a specification.

The object of my invention is to provide a simple and durable means for looking a trackbolt, which will be fully and clearly hereinafi ter shown by reference to the accompanying drawings, in which Figure 1 is an end view of a rail and fishjoint, showing the device complete and together. Fig. 2 is an inside view of the lock. Fig. 3 is a horizontal section through line X X, Fig. 1. Fig. 4 is a top view of the looking or tightening thinible, and Fig. 5 is a side elevation of a-portion of a fish-joint.

a is the rail; c a the fish-j oint. The plate a is provided with an oblong hole, a", or of any other suitable form for preventing the nut a from turning therein. a represents the bolt. (6 is the tapering thimble, adapted to fit in the fish plate a and of an oblong form, or such form as will not turn in the plate. It has an opening, a down through the side, and in some cases a small opening, a part way down The nut a" is provided with in the other side. a flange, 0, the portion a being adapted to fit the hole in the fish-plate.

It will now be seen that by putting the nut a in place and inserting the bolt through the thimble, fish-bolts, and rail, and then screw ing up the bolt, the thimble will tighten around it in proportion as it is screwed up, and thereby look it .orhold it securely and prevent it from turning. The nut a, when in position, is drawn in against the flange or. shoulder 0, thereby looking it so it is impossible to turn it, and the bolt is locked by the thimble a, as before mentioned.

I claim as my invention A track-bolt lock consisting of the bolt 0?,

a nut, (0, adapted to fit the opening in the fishplate without turning in it, and a tapering thimble having an opening on one side, also adapted to fit the fish-plate without turning, in combination with a bolt, a for the pur poses described.

D. FRANKLIN BLIGHTON.

Witnesses:

. J. M. CALDWELL, JAMES SANGSTER. 

